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Hioki 8947 Charge Input Module
for the Hioki Memory HiCorder

Used with the Hioki 8860-50 and 8861-50 Memory Hicorder

Hioki 8947 Shown

Product Information
Datasheet	2.6 MB
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The Hioki 8947 is equipped with circuits for two independently usable input channels. Easy to install, simply Slide the Hioki 8947 into the MEMORY HiCORDER for use.

In addition to its charge input terminals, it is equipped with BNC terminals that support internal pre-amplifier pickup sensors
Not only ordinary piezoelectric acceleration pickups, but voltage output acceleration pickups with internal pre-amplifiers can be connected directly to the 8947, which supplies a constant current power supply for pre-amplifier operation.
Accommodates voltage signal inputs
In addition to acceleration pickup signals, the 8947 can also measure ordinary voltage signals.
Internal anti-aliasing filter
The 8947 is equipped with an anti-aliasing filter that is indispensable when performing FFT analysis on vibration waveforms.
The 8947 can be used for the following applications:
Measuring engine vibration, Measuring brake vibration, Measuring pump vibration, Measuring bearing vibration, Measuring vibration of vibrators in cellular telephones, CD player vibration testing ... and other types of vibration endurance testing

Specifications
Specifications		Description
Measurement Functions	Number of Channels	2
Measurement Functions	Type of Measurement	Voltage Measurements
Input Connectors	Voltage input/ integrated preamplifier input	metallic BNC connector (for voltage input: input impedance 1MΩ, input capacitance 200pF or less)
	Charge input	miniature connector
	Max. rated voltage to earth	30Vrms or 60V DC (with input isolated from the unit, the maximum voltage that can be applied between input channel and chassis and between input channels without damage)
Suitable transducer	Charge input	Charge-output type piezoelectric acceleration pick-up sensor
Suitable transducer	Internal preamp input	Acceleration pick-up sensor with an internal preamp
Measurement Range Charge input (miniature connector) Internal pre-amp input (BNC connector)	General	50m (m/s2)/DIV to 10k (m/s2)/DIV, 12 ranges × 6 types, charge input sensitivity: 0.1 to 10 pC/(m/s2)
	integrated pre-amplifier input	0.1 to 10 mV/(m/s2)
	amplitude accuracy	±2% of full scale
	frequency characteristics	f1 to 50kHz, +1/−3dB,
	low-pass filter	500Hz/5kHz,
	pre-amplifier drive power source	2mA ±20%, +15V ±5%
	maximum input charge	±500pC (high-sensitivity setting, 6 ranges), ±50000pC (low-sensitivity setting, 6 ranges)
Measurement Range Charge input Voltage input (BNC connector)	General	500μV to 2V/DIV, 12 ranges,
	DC amplitude accuracy	±0.4% of full scale
	frequency characteristics	DC to 400kHz, +1/−3 dB
	Low-pass filter	5Hz/500Hz/5kHz/100kHz
	input coupling	DC, GND, AC
	Max. allowable input	30Vrms or 60V DC
Measurement resolution		1/80 to 1/32 of measurement range (depending on measurement sensitivity; installed in 8860/8861)
Maximum sampling rate		1MS/s (2-channel simultaneous sampling)
Anti-aliasing filter		Integrated filter for suppressing aliasing distortion caused by FFT processing (automatic cutoff frequency setting/OFF)
Additional Notes		When using Model 8947 with serial number earlier than 040933650 on Models 8860 or 8861, residual noise will be 200 μVp-p.

Ordering Information
Model	Description	Buy Online	Price
8947	Hioki 8947 Charge Unit		$1,895.00
Compatible Cords
9165	Hioki 9165 Connector Cable (BNC-BNC)		$35.00
9198	Hioki 9198 Test Lead		$69.00
9217	Hioki 9217 Connection Cord (BNC-BNC)		$89.00
9322	Hioki 9322 Differential Probe		$695.00

Hioki 8947 Charge Input Module for the Hioki Memory HiCorder

Hioki 8947 Charge Input Module
for the Hioki Memory HiCorder